85-0500 K&N Stubstack Air Horn

$36.99
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SKU
85-0500
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Stubstack Air Horn
This K&N Stubstack is designed to be used on Holley 390-850 cfm square bore carbs (4150/4160), that have had the choke horn milled off, but do not use an air cleaner. The full radius design helps to increase the airflow for drag racing. Will also hold down the base plate of a cold air scoop. Will not work with K&N Custom Chrome Racing Air Cleaners. The K&N Stubstack is designed to increase the airflow of carburetors by decreasing the restriction around the choke horn. Stubstacks fit inside the air cleaner housing and slide snugly down over the choke horn.
  • Fits Holley 4150/4160 carburetors with the choke horn milled off
  • For use without an air cleaner, but will hold down a cold air scoop
  • Increases the airflow by reducing restriction
  • Reduces turbulence, improves metering accuracy
Product StyleAccessories
Height0.563 in (14 mm)
Width6.54 in (166 mm)
Length6.54 in (166 mm)
Package Quantity1
Weight0.3 lb (0.1 kg)
Product Box Height2 in (51 mm)
Product Box Length6.5 in (165 mm)
Product Box Width6.5 in (165 mm)
Material UsedPolyurethane
Warranty1 Year Limited
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K&N is the home of the original red oiled air filter. In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an oiled air filter. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe. Thank you for helping us reach 50 years in business!


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